You can use Photoroom for free on the free plan, which provides limited access to features. The Pro and Max plans provide more, but require a subscription. A 7 day free trial is available for Pro and Max if:
It is your first time subscribing to Photoroom
and either:
You sign up for a Pro or Max yearly plan (the first 7 days is free and then you are billed for the rest).
You sign up for a Pro or Max monthly plan, which is only available on the Web App version of Photoroom. The first 7 days is free and then you are billed for the rest.
To find out how to subscribe, see Subscribe to Photoroom and Subscribe to Photoroom Max.
Further information
Billing cycle and free trials.